Simply.. the availablity to use str rather than dex to give a combat bonus. A Fighters higher str can give him the advantage in combat rather than how dexterous he is... I know this is a long debate and many of you won't understand... but options for both Strength and Dex based combat really does make sense.
Just look at the first Diablo - where the cap on stats meant that Rogues would be the better Melee fighters because they retained the ability to hit people whilst the Warriors floundered with their low chances to hit.
